Statics build failed

[sapk]

Since the update of src-d/go-git (#7688) the static builds fail for linux/386.

https://drone.gitea.io/go-gitea/gitea/11344/3/3

Two solutions:

• drop linux/386 support
• wait for a fix on go-git

[sapk]

@lunny already created an issue on there side: src-d/go-git#1202

[lunny]

Since src-d/go-git#1202 merged. Maybe we need upgrade src-d/go-git ?